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DBJ-003
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DABUND
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Copper
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1M - 50M
Material
Color
Keywords
Application
Looking for a high-quality long-distance HVAC line set? This 1/4" x 3/8" x 75 ft insulated copper pipe is designed for efficient refrigerant flow, superior durability, and energy-saving performance—ideal for residential and light commercial mini split systems.
Product Overview – 75 ft Pre-Insulated Copper Line Set
This insulated copper pipe is a ready-to-install solution for HVAC professionals and contractors, combining premium copper tubing with factory-applied insulation.
Liquid Line: 1/4" (6.35 mm)
Suction Line: 3/8" (9.52 mm)
Length: 75 ft (22.86 meters)
Material: 99.9% pure copper
Structure: Twin insulated copper pipes
Designed to reduce installation joints and minimize refrigerant leakage risks in long-distance setups.
High-Purity Copper Tubing – Built for Reliability
99.9% Pure Copper Meets ASTM Standards
Manufactured using C12200 copper, this tubing complies with ASTM B280 standards, ensuring:
Excellent thermal conductivity
Strong corrosion resistance
Long service life
This guarantees stable and reliable performance for HVAC and refrigeration systems.
High Pressure Resistance for Modern Refrigerants
With a pressure rating of 2100–7000 PSI, this copper pipe supports high-pressure refrigerants such as R410A, ensuring safe and long-term system operation.
Advanced Insulation Technology for Energy Efficiency
UV-Resistant & Weatherproof Insulation
The insulation is made from high-density polypropylene or rubber material, offering:
UV resistance for outdoor installations
Flame retardant performance (UL94 compliant)
Wide temperature range from -40℃ to 120℃
Thick Insulation Layer for Maximum Thermal Protection
With approximately 1/2" insulation thickness, this line set:
Minimizes heat loss
Maintains refrigerant temperature stability
Improves overall system efficiency
Moisture & Condensation Protection
The closed-cell insulation structure acts as a barrier against:
Water penetration
Condensation buildup
Mold and corrosion risks
99.9% Pure Copper
Black Rubber Insulated Pipe
Plastic Cap
Features of pipe insulation tubing:
● Pipe Insulation, Material Black Rubber, Temp Range -40 Degrees to 120 Degrees.
● The pipe insulation has a better function of moisture condensation. Insulation material is both the insulation layer and moisture-proof layer.
● There is no need to drop the water vapor permeation protective layer so that it has a better moisture condensation function.
Key Benefits of 75 ft Insulated Copper Pipe
Ideal for Medium to Long Distance Installations
The 75 ft length is perfect for:
Multi-room residential systems
Rooftop HVAC units
Complex installation layouts
Reducing joints means fewer leak points and better reliability.
Optimized for Small HVAC Systems
The 1/4" + 3/8" configuration is widely used for:
9000 BTU mini split systems
12000 BTU air conditioners
0.75–1.0 ton HVAC systems
Improve Energy Efficiency & Reduce Operating Costs
Pre-insulated tubing reduces heat exchange, helping your HVAC system operate more efficiently and lowering energy consumption.
Easy Installation & Reduced Labor Cost
Factory-applied insulation eliminates the need for additional wrapping, saving installation time and labor.
Durable, Corrosion-Resistant & Long-Lasting
Copper’s natural corrosion resistance ensures a lifespan of 15–20 years or more with proper installation.
HVAC Applications – Wide Compatibility
This insulated copper pipe is suitable for:
Ductless mini split systems
Heat pump systems
Central air conditioning systems
Refrigeration applications
It works across both residential and light commercial HVAC installations.
Technical Specifications
| Feature | Details |
|---|---|
| Length | 75 ft (22.86 m) |
| Liquid Line | 1/4" |
| Suction Line | 3/8" |
| Material | 99.9% pure copper |
| Insulation Thickness | Approx. 1/2" |
| Insulation Type | UV-resistant polypropylene / rubber |
| Temperature Range | -40℃ to 120℃ |
| Pressure Rating | 2100–7000 PSI |
| Standards | ASTM B280, C12200, UL94, ASTM E84 |
OEM Customization & Manufacturing Capabilities
Looking to grow your HVAC brand?
We offer:
Custom insulation colors (black / white)
Logo printing on insulation
Custom lengths (15m–50m+)
OEM & ODM services
All insulation is produced in-house, ensuring consistent quality and flexible customization.
Insulated Copper Pipe
Size | Length | Insulation Black Rubber | Flame Resistant |
1/4+3/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+1/2 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/2+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+7/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4 + 3/8 Mini split line set used for 0.75TON - 1.0TON mini split air conditioner.
1/4 + 1/2 Insulated copper line set used for 1.5TON - 2.0TON mini split air conditioning.
1/4 + 5/8 Insulated copper pipe used for 2.0TON - 2.5TON split air conditioner system.
3/8 + 5/8 Insulated copper tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.
3/8 + 3/4 Insulated copper tubing used for 4.5TON - 6.0TON split air conditioner installation.
3/8 + 7/8 Insulated copper pipe apply for 6.0TON - 8.0TON ductless mini split air conditioner.
Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.
Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 2P and 2.5air conditioner system.
3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.
3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.
3/8 + 7/8 Insulated copper pipe apply for 6P - 8p TON ductless mini split air conditioner.
1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.
All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.
3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.
3/8 + 3/4 Insulated copper pipe used for 54000 BTU and 72000 split air conditioner installation.
3/8 + 7/8 Insulated copper pipe Piping apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.
Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.
High quality copper line set 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.
3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.
3/8 + 3/4 Insulated copper pipe used for 54K and 72K split air conditioner installation.
3/8 + 7/8 Insulated copper pipe apply for 72K - 96K ductless mini split air conditioner.
Why Choose DABUND Insulated Copper Pipe?
15+ years of HVAC manufacturing experience
In-house production (copper + insulation)
Weekly global shipments
Strict international quality standards
Competitive factory pricing
DABUND provides a one-stop HVAC solution for distributors, contractors, and OEM buyers.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
SGS Certificate
Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21
Exhibition
We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.
FAQ
1. What is a 1/4" x 3/8" x 75 ft insulated copper pipe used for?
This copper pipe is used to connect indoor and outdoor units in mini split and HVAC systems, enabling efficient refrigerant circulation over longer distances.
2. What size HVAC system is this line set suitable for?
The 1/4" + 3/8" configuration is typically used for 9000–12000 BTU systems (0.75–1.0 ton), making it ideal for residential applications.
3. Why choose a 75 ft line set instead of shorter options?
A 75 ft line set allows greater installation flexibility and reduces the need for additional connections, minimizing leak risks.
4. Is this copper pipe compatible with R410A refrigerant?
Yes, it supports high-pressure refrigerants like R410A due to its pressure rating of up to 7000 PSI.
5. What type of insulation is used in this product?
It uses UV-resistant polypropylene or rubber insulation with a closed-cell structure, providing excellent thermal insulation and moisture protection.
6. Can this insulated copper pipe be used outdoors?
Yes, the UV-resistant and weatherproof insulation makes it suitable for outdoor installations in harsh environments.
7. What are the advantages of pre-insulated copper pipes?
They save installation time, improve insulation consistency, reduce energy loss, and prevent condensation issues.
8.Can I customize this copper pipe for my brand?
Yes, OEM and ODM services are available, including custom branding, insulation color, printing, and packaging.
9. How long does an insulated copper pipe last?
With proper installation, it can last over 15–20 years due to its corrosion resistance and durable insulation materials.
